Lead burning



Dec. 14, 1948. A, E, HUGHES 2,456,194

LEAD BURNING Filed Nov. 28, 1947 TJ.:1.5 ytl to 2 Z \\\\\\L ff -2-- INVENTR ATTORNEY Patented Dec. 14, 1948 U NilTED s TArEs Pari-ENT for-r "2,456,194 y -f LEAD BURI'NG @Al/Bert Elliiglids, East'PrdencarRffI. ""Afiietion November 2s, 1947,' seiiarNofissjQo 6 Claims. l

This invention deals with lead burning and provides a simplified way of supporting a tool for work on a vertical joint so that one man is enabled to do the job including movement of the tool and manipulation of the flame to make the Joint.

In the annexed drawing, Figure 1 is a vertical section through a lead lined chamber showing the tool and its mounting in relation to a Vertical joint.

Figure 2 is a, horizontal section on line 2 2 of Figure 1, and shows a butt joint.

Figure 3 is a like section showing a lapped joint with which the new apparatus is equally useful. This involves a mold having one side shorter than the other to match the two sides of the joint.

The tool I has a mold Il at one end which contains the lead I2 that is melted by a fiame from a. burner I3 held by the operator. The present invention involves no change in the conventional practice as to the burning itself, and deals only with the practice as to holding the tool. Known practice has been to have a helper hold the tool against the joint while the lead burner manipulates the name and forms the joint.

I provide the cable l5 anchored at one end I6 at the floor a foot or a foot and a half out from the Wall I1, and extending over a laterally adjustable sheave I8 at the top so that it hangs down outside. The anchor is made by burning lead to the floor, requiring no drilling, and is heated and removed when the job is done. A weight I9 at the free end puts a tension on the cable and tends to draw it into a straight line from the anchor to the top of the wall. I find that a weight of about pounds is suitable.

A wheel 2|] is provided at the outer end of the arm 2l which carries the mold. The wheel rides on the cable. The arm is of such length as to make the entire tool slightly longer than the spacing of the cable from the wall. Thus at any pointalong the cable, the tool pushes the cable laterally outward from the wall, and since the cable is under tension from the weight at its free end; it exerts a counter force pushing the tool toward the wall. This force is suicient to hold thetool against the joint as a helper otherwise wouldvdo, and the operator can move the tool alongthe joint by hand during the progress of the work in forming the joint.

To give stability I provide a diagonal bracing armi23 from the outer end of the tool to the wall at a point below the mold. This arm is similarly 2 pressed against the wall by the force of the cable.

Variation of this construction may be made within the concept of having a vertically supported flexible member under tension spaced from the wall and a tool having the usual mold at one end of its supporting arm and at the other end a part riding on the tension member, the tool being of such overall length that it displaces the flexible tension member laterally away from the wall and so creates a counter force pressing the tool against the work. The invention also includes, as a sub-combination, the tool having a mold at one end of the supporting arm and a wheel or equivalent part at the other end to ride on a fiexible tension member.

This apparatus not only makes it possible to do without a helper but provides steadier support for the mold, especially when working at a height where the helper could not stand, all resulting in much greater speed in doing a job. The supporting rig is easily set up and taken down. An illustrative use is in burning a vertical joint in a lead lined acid tank.

I claim:

l. In an apparatus for forming a molded joint of lead, or the like, along a vertical wall, the combination of a flexible member supported vertically in spaced relation to the wall, means for putting tension on said member, a tool comprising a mold for forming said joint and movable along the wall and an arm on the mold having an outer part engageable by the flexible member, said arm being of such length that when located between the flexible member and the work the tool tends to displace the ilexible member away from the wall and is held against the wall by the counter force caused by the tension of said flexible member.

2. A combination as defined in claim 1, in which there is a support for the exible member intermediate its ends and over which said member is movable longitudinally, and an anchor for one end of the flexible member, the flexible member extending generally vertically from its anchored end over the support, and a weight connected to the free end of the fiexible member to create the tension.

3. A combination as defined in claim 1, in which there is a. pulley wheel for supporting theV flexible member intermediate its ends, the ilexible member being anchored at one end and extending generally vertically from its anchored end over the pulley wheel, and a weight connected to the free end of the flexible member to create the tension.

4. A combination as defined in claim 1, comprising also a. bracing member extending from the outer part of the arm of the tool and engageable with the wall in spaced relation to the mold.

5. A combination as dened in claim 1, in which said part on the arm engageable with the flexible tension member is a wheel.

6. In an apparatus for forming a molded joint of lead, or the like, along a vertical wall, the combination of a cable anchored at one end at the bottom of said Wall but laterally spaced therefrom, a pulley wheel mounted above the wall, the cable extending from its anchored end upward in spaced relation to the wall and over the pulley wheel, a Weight on the free end of the 15 cable for imposing a tension thereon, a mold for forming said joint and movableV along the wall, an arm connected at one end to the mold, a brac- 4 ing member extending from the arm and engageable with the wall in spaced relation to the mold, and a wheel on the opposite end of the arm and engageable with the cable, said arm and bracing member being of such length that they displace the cable laterally and are held against the wall by the counter force of the tensioned cable.

ALBERT E. HUGHES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,792,545 McClure Feb. 17, 1931 2,395,723 Chielewski Feb. 26, 1946 

